Radiation Imaging Apparatus Power Mode Switching
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Solution Overview
Problem
The radiation imaging apparatus experiences high power consumption due to the prolonged time between the issuance of an imaging preparation instruction and the start of actual imaging, which can lead to increased operational power usage.
Innovation Solution
The apparatus operates in a first power consumption mode for imaging preparation and switches to a second mode with higher power consumption only upon start information indicating radiation irradiation, allowing the processing unit to monitor the incident dose effectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the processing unit operates in high power consumption mode continuously to monitor incident dose and perform reset operations, then the reliability of radiation detection is improved, but the power consumption increases significantly during the preparation period before irradiation
Solution Approach 1:
The processing unit dynamically switches between a first power consumption mode during the preparation period (performing reset operations at predetermined intervals) and a second power consumption mode with higher power consumption when radiation irradiation is detected. This dynamic adaptation allows the system to maintain necessary functionality while minimizing power consumption during idle periods.
Solution Approach 2:
The reset operation is performed periodically at predetermined intervals during the preparation period rather than continuously. This periodic action maintains the reliability of radiation detection while significantly reducing power consumption compared to continuous operation.
2Manufacturing precision
If the reset operation is performed continuously to ensure accurate radiation imaging, then the manufacturing precision of the image is improved, but the time required for preparation increases
Solution Approach 1:
The reset operation is executed periodically at predetermined intervals rather than continuously throughout the preparation period. This approach ensures that pixels are adequately reset for accurate radiation detection while minimizing the total time required for preparation, thereby resolving the contradiction between image quality and preparation time.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach reduces power consumption before radiation irradiation and ensures efficient exposure control during imaging by optimizing power usage based on the start of radiation exposure.
Implementation Method 1
a pixel array having a two-dimensional array of pixels, each as a combination of a conversion element for converting radiation into an electrical signal
Implementation Method 2
a processing unit including an amplification unit configured to amplify signals output from the imaging unit and the detection unit
Data Source
AI summary
A radiation imaging apparatus comprising an imaging unit configured to generate a radiation image, a detector configured to detect radiation to monitor an incident dose, a processor including an amplifier and configured to perform processing of reading out signals from the imaging unit and the detector and outputting a signal based on the readout signals, and a controller configured to control the processor is provided. The controller causes the processor to operate in a first power consumption mode before radiation irradiation and perform a reset operation, and causes the processor to operate in a second power consumption mode with higher power consumption than the first power consumption mode in accordance with information indicating a start of radiation irradiation, and causes the processor to start outputting a signal for monitoring an incident dose based on a signal read out from the detector.